Mechanism for adjusting the flow of air to furnace burners



June 22, 1954 R E SOLOMON 2,681,649l

MECHANISM FOR ADJUSTING THE vFLOW OF AIR TO FURNACE BURNERS Filed April l?, 1951 umlllll idw o/Ozaaz {fa/Weg Patented June 22, 1954 MECHANISM FR ADdUSTlNG THE FLOW OF AIR 'IKO FURNACE BURNERS Ralph E. Solomon, Chattanooga, Tenn., assignor to Samuel Stamping & Enameling Company, Chattanooga, Tenn., a corporation of Tennessee Application April 17, 1951, Serial No. 221,449

1 Claim. 1

This invention relates to mechanism for adjusting. the flow of air to a furnace burner.

The invention is more particularly concerned with air adjustment mechanism for floor furnaces which for the most part are installed beneath the floors and in which any air liow adjustmcnts must usually be made from beneath the floor which is a rather inconvenient operation.

A primary object of the present invention is to provide primary air flow adjusting mechanism which is readily accessible from living quarters thereby overcoming the above noted inconveniences.

Other objects and advantages of the invention will become apparent in the course of the following detailed description, taken in connection with the accompanying drawing, wherein Figure 1 is a vertical sectional View of the general layout of a. floor furnace and illustrating the application of the present invention thereto.

Figure 2 is an end elevation of the improved mechanism; and

Figure 3 is a top plan view of the improved mechanism.

Referring now in detail to the drawing, the floor type furnace is shown to include a mixer head M into which extends a gas feed pipe P from a gas line connection C.

The furnace further includes a burner B, a combustion chamber D, a cabinet E and a frame F.

The present invention is in the form of an air shutter mechanism and same in accordance with a preferred embodiment thereof comprises a base plate Iii including a horizontal portion Il and a vertical portion i2 suitably secured to the frame F.

A bracket I3 is supported on the horizontal plate portion II and such bracket comprises opposed flanges Il which are secured to the plate portion il by lmeans of bolts I5 and cooperating nuts i6. The bracket further comprises a central housing member Il which is formed by laterally spaced vertical walls I8 extending upwardly from the flanges ill, a top wall I9 and end Walls 26 whose lower edges are spaced above the plate portion il to provide guide openings 2 I A shutter operating arm 22 includes a horizontal portion 23 disposed upon the upper face of plate portion II and slidably supported within the housing member Il, the same extending through the guide openings 2l.

The arm further includes a vertical depending portion 211 which is rigidly secured to the base face of a anged disk or shutter 25 diametrically thereof and which disk is provided with a central aperture 26 through which the gas feed pipe P extends.

The arm 22 further includes an upwardly extending vertical portion 21 on the side of housing il opposite to that of depending portion 24. The portion 2l merges into an angular portion 28 which is provided with a tool receiving aperture 29. V

A plate spring 3i] is disposed within the housing member il and reacts against the top wall I9 and the horizontal arm portion 23 whereby same is slidable under spring resistance and thus the shutter 25 will not be inadvertently moved from a desired adjusted position. The lower wall w of the cabinet E is provided with an opening 3l through 'which a tool may be passed for engagement within the aperture 29 in effectingadjustment of shutter 29 toward or away from the mixing head M and this opening 3l would in practice be provided with a hinged or pivoted door.

While the spring 39 will function to retain the arm 22 against movement under natural forces it will permit movement thereof through force of an operating rod extending through opening 3| and engaged within the arm aperture 29, and an operating arm for such purpose may be a part of the equipment of the furnace.

It is to be particularly noted that the air adjusting mechanism is simple in construction and will therefore add substantially little to the cost of the type of furnaces under consideration.

While I have disclosed my invention in accordance with a single specic embodiment thereof, such is to be considered as illustrative only, and not restrictive, the scope of the invention being defined in the sub-joined claim.

What I claim and desire to secure by U. S. Letters Patent is:

In combination, a floor type furnace including a frame, a mixing head into which leads a gas feed pipe, a cabinet disposed above said pipe and having an opening therein, a horizontal plate supported by said frame beneath said cabinet opening, a disk-form shutter havingl a central opening loosely receiving said pipe for movement axially thereof toward and. away from said mixing head, a bracket supported on said plate, an arm slidably supported on said plate and through said bracket and having a connection with said shutter, said arm being accessible for movement to adjusted positions by a tool extended through said opening, and a plate spring in said bracket bearing on said arm for retaining same in any adjusted position.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 917,529 Bloom Apr. 6, 1909 1,252,707 Lewis Jan. 8, 1918 1,431,609 West Oct. 10, 1922 1,921,152 Caldwell Aug. 8, 1933 2,269,333 Bloom Jan. 6, 1942 2,543,781 Jurgens Mar. 6, 1951 

